Unset RUBY_ENGINE and RUBY_VERSION.
Unset RUBY_ENGINE and RUBY_VERSION.

kbrock/chruby,ilikepi/chruby,ngpestelos/chruby,eunomie/chgo,rstacruz/chruby-fish,ngpestelos/chruby,eunomie/chgo,regularfry/chruby,rstacruz/chruby-fish,kbrock/chruby,JeanMertz/chruby-fish,regularfry/chruby,JeanMertz/chruby-fish,ilikepi/chruby,postmodern/chruby,postmodern/chruby